Machine for molding concrete blocks.



PATENTED AUG. 4, 1903.-

G. BRADY.

MACHINE FOB. MOLDING CONCRETE BLOCKS.

APPLICATION FILED MAR. 13, 1903.

4 SHEETS-SHEET 1-.

N0 MODEL.

PATENTED AUG. 4, 1903.

G. BRADY. MACHINE. FOR MOLDING CONORETE BLOCKS.

APPLIOATION FILED MAB..13, 1903.

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PATENTED AUG. 4, 1903.

G. BRADY.

MACHINE FOR MOLDING CONCRETE BLOCKS.

APPLICATION FILED MAR; 13, 1903.

4 SHEETS-SHEET 3.

H0 MODEL No. 735,061. PATENTED AUG. 4, 1903. G. BRADY.

MACHINE FOR MOLDING CONCRETE BLOCKS.

APPLICATION FILED MAR. 13, 1903.

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its. 735,061.

Patented August 4, 1.965.

PATENT OFFICE.

GEORGE BRADY, OF JACKSON, MICHIGAN.

MACHINE FOR MOLDING CONCRETE BLOCKS.

, SPECIFICATION forming part of Letters Patent N 0. 735,061, datedAugust 4, 1903.

Application filed March 13. 1903- Serial No. 147.598. (No model.)

To a whom, it Hui/y concern: I

Be it known that I, GEORGE BRADY, a citizen of the United States,residing at Jackson, in the county of Jackson and State of Michigan,have invented certain new and useful Improvements in Machines forMolding Concrete Blocks; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableoth ers skilled in the artto which it appertains to make and use thesame.

My invention relates to improvements in machines for molding concreteblocks, and more particularly to a machine for molding blocks adaptedfor building purposes; and its object is to provide a manually-operatedmachine that is simple, effective, and not likely to get out of order,to provide means for adjusting said machine to produce blocks of variousdimensions, and to provide the same with certain new and usefulfeatures, hereinafter more fully described, and particularly pointed outin the claims.

My device consists, essentially, of the combination and arrangement ofadjustable sides of the mold, supports adjustable on the sides to holdthe ends of the mold, a yoke having attached a screw and a follower topress the contents of the mold and adapted to be moved away from abovethe mold, means for bolding the yoke, means for moving the same, andmeans for adjusting the sides of the mold, as will more fully appear byreference to the accompanying drawings, in which Figure l is aperspective of a device embodying my invention; Fig. 2, a verticalsection of the same on the line 2 2 of Fig. 3; Fig. 3, a front elevationof the same; Fig. 4, a plan view of the same, and Fig. 5 a detail of themeans for adjusting the sides of the mold.

Like letters refer to like parts in all of the figures.

A represents any suitable frame, on which is supported any suitablebed-plate B.

0 represents transverse ways, in which are slides D, to which aresecured upwardly-projecting posts D, to which posts are attached thesides E of the mold. Extending vertically on the inner surfaces of thesides E and thence over the top and upon the outside of the sides andalso longitudinally adjustable thereon are clamps F, which are securedin place by means of suitable set-screws F, engaging grooves F in theouter surface of the sides. These clamps serve to support the detachedend pieces E of the molds, which end pieces are of different dimensionsto correspond to the difierent widths of blocks to be formed. To preventthe spreading of the outer ends of the sides E, a clamp C is provided ateach end, which clamp is preferably pivoted to the mold at one end andadjustable for length by being made in two overlapping parts andprovided with a slot G and a bolt G, adjustable in the slot.

A lateral extension A of the frame is provided on which is mounted acarriage H, adapted to traverse ways I on the said extension and movedby means of a rack-bar J,

attached to the carriage at one end, and en-' gaged by a pinion K,mounted on a suitable shaft K, journaled in bearings on the extension A,and provided with a crank K to rotate the shaft and pinion. Mounted onthis carriage is a double yoke L, extending upward and thencehorizontally toward the mold and thence downward to a plane above theplane of the mold, and provided at each end with suitable lugs L and Lto engage openings in the upwardly-projecting hangers M and M at eachside of the mold. When this yoke is run over the mold, these lugs enterthe openings in the hangers. Attached to the yoke is a block N, solocated as to be over the center of the mold when the yoke is run overthe same, said block having a central screw-threaded opening in which ismounted a vertical screw 0. On the lower end of the screw is a head P,to which head is detachably secured a follower Q by means of thumb-boltsQ. Said follower is adapted to enter the mold and press the materialtherein and can be changed as occasion requires, and is also provided onits under surface with such formation as is necessary to suitablyimpress the surface of the material with the appearance of cut stone,rough ashler, brickwork, or other design, as occasion may require.

To guide the head P, upwardly-projecting rods P are attached thereto andslidably engage openings in the respective ends of the block N. Thescrew 0 is operated by a hand- ICO wheel 0, and on this wheel is a ring0, adapted to engage a vertically-adjustable and flexible support R, towhich support is attached a bell S. Thus when the screw is turned down apredetermined distance this ring vibrates the support and rings thebell.

To simultaneouslyadjust the sidesEtoward and from each other, the slidesD project downward alongside the ways 0 and are provided withscrew-threaded openings in which are inserted transverse right and leftthreaded screws V, as shown in Fig. 5, and said screws are connected bybevel-gears X and a counter-shaft WV to cause them to rotatesimultaneously and are operated by means of a sprocket-wheel T on one ofsaid screws, connected by a chain U to a similar wheel T, journaled insuitable upwardly-projecting hangers Y and provided with a crank T..When the screws V are thus rotated, the slides at each side willsimultaneously move toward and from the center line of the mold, andthus move the sides toward and from each other in parallel position.

The device may also be provided with a suitable raised platform Z, uponwhich the operator can stand to fill the mold and operate the screw 0and crank T, the crank K being operated by an assistant standing on thefloor.

The machine is operated as follows: By turning the crank T the sides arebrought in contact with the ends of the end plates E and with theirlower edges just above a suitable pallet-board E, laid upon thebed-plate B. The material is now placed in the mold and the yoke movedto place over the same with itslugs engaged with the hangers, wherebythe yoke is firmly held in place against the strain of the screw 0. Saidscrew is now turned down until the alarm-bell is sounded. The contentsof the mold are thus effectively compressed and made of the requireddimensions. The screw is then run up until the follower Q is above thetop of the mold and the yoke run back from above the mold.

- The sides E are then separated a sufficient distance to free the endsE and to permit of the removal of the pallet-board, together with theblock thereon, whereupon the described operation may be repeated.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

1. The combination of 'a bed-plate, sides movable toward and from eachother, detached ends, adjustable clamps on the sides to support theends, and means for moving and holding the sides.

2. The combination of a mold having separate sides and ends, means foradjusting and supporting the sides and ends, a yoke. movable relativeto-the mold, a screw mounted on the yoke and a follower attached to thescrew.

3. The combination of a bed-plate, transverse ways, slides movable inthe ways, sides supported by the slides, detached ends, means forsupporting the ends, and means for adjusting the slides in the ways.

4. The combination of a bed-plate, transverse ways, slidesmovable in theways, right and left screws engaging the slides, means forsimultaneously rotating the screws, sides supported by the slides,adjustable clamps on the sides to support the ends, and detached endssupported by the clamps.

5. The combination of a mold having movable sides and ends, a bed-platebeneath the mold, a yoke, a movable carriage supporting the yoke, meansfor moving the carriage, a screw mounted on the yoke, and a follower onthe screw.

6. The combination of a mold, a carriage movable toward and from themold, hangers at each side of the mold and provided with openings, ayoke mounted on the carriage and having lugs to engage the openings inthe hangers, a screw mounted on the yoke, and a follower on the screw.

7. The combination of a bed-plate, transverse ways, slides movable inthe ways, screws to operate the slides, posts attached to the slides,sides supported by the posts, clamps adjustable on the sides, detachedends supported by the clamps, a counter-shaft and bevel-gears connectingthe screws, and means for rotating the screws.

8. The combination of a bed-plate, transverse ways, slides movable inthe ways, means for adjusting the slides, sides supported on the slides,clamps adjustable on the sides, ends supported by the clamps, hangers atthe respective sides of the mold and having openings, a yoke providedwith lugs to engage the openings, a screw mounted on the yoke, afollower mounted on the screw, a carriage supporting the yoke, Waystraversed by the carriage, and a rack and pinion to move the carriage.

9. The combination of a mold, a screw and follower to compress thecontents of the mold, an adjustable and flexible support, a bell mountedupon the support, and a ring mounted on the screw to engage the supportand ring the bell. I

10. The combination of a bed-plate, sides having grooves in their outersurfaces, means for movably supporting said sides in parallel planes,clamps extending vertically on the inner surfaces of the sides, andthence above and on the outside of the same, set-screws in the clamps,and detached end plates supported by the clamps.

In testimony whereof I aflix my signature in presence of two witnesses.

GEORGE BRADY.

Witnesses:

JOHN MODEVITT, OHAs. E. BRADY.

